Montgomery County Property Tax Calculator
Maryland assesses property at the state level rather than through individual counties, with the Maryland Department of Assessments and Taxation's Montgomery County office handling local valuations on a rolling three-year cycle. The statewide Homestead Tax Credit then caps how much of a jump in assessed value can actually be taxed each year for an owner-occupied home. Montgomery County appears in the list above — enter a home value once it's selected.
Annual Property Tax
$5,430Monthly (Escrow)
$453Effective Rate
0.85%Montgomery County's effective rate (0.85%) is 8% lower than the Maryland average (0.92%).
Edit inputs ↑Montgomery County Effective Rate
0.85%
Vs. Maryland Average
8% lower
Maryland National Rank
#21 of 51
1 = highest statewide rate
County Median Home Value
$640,300
Estimated Annual Tax (Median Home)
$5,430
Monthly Equivalent
$453
Property tax in Montgomery County, Maryland
- The Maryland Department of Assessments and Taxation reassesses each property on a rolling cycle roughly every three years, with the local Montgomery County office handling the process.
- The statewide Homestead Tax Credit limits how much of a triennial assessment increase can actually be taxed for an owner-occupied home in a single year, smoothing out large jumps.
- Owners can appeal a new assessment within the window specified on their notice, first to the local assessment office and then to the Maryland Tax Court if needed.
- County and municipal rates get billed against the capped, credited figure rather than the raw new assessment.
Other large Maryland counties
Effective rate = aggregate real-estate taxes paid ÷ aggregate home value (ACS 2024 5-year).
| County | Effective Rate | Median Home Value |
|---|---|---|
| Baltimore city | 1.37% | $229,600 |
| Howard County | 1.11% | $597,900 |
| Prince George's County | 1.06% | $426,000 |
| Charles County | 0.97% | $428,500 |
| Baltimore County | 0.97% | $349,300 |
See property tax across every county in Maryland at the Maryland property tax calculator , or check your Maryland income tax with the Maryland income tax calculator .
Frequently asked questions
How is property tax calculated in Montgomery County?
The state Department of Assessments and Taxation reassesses your property roughly every three years, and the Homestead Tax Credit then caps how much of that jump is actually taxable for an owner-occupied home in any given year, before county and municipal rates apply.
How do I appeal my Montgomery County assessment?
A formal case goes to the local Department of Assessments and Taxation office within the window shown on your assessment notice, with the Maryland Tax Court as a further step if you're unsatisfied with the result.
Does Montgomery County offer a homestead credit?
Yes — Maryland's Homestead Tax Credit caps how much an owner-occupied home's taxable assessment can grow in a single year, which smooths out the impact of the state's roughly every-three-years reassessment cycle.
Why did my Montgomery County assessment jump so much this year?
Maryland reassesses on a rolling multi-year cycle rather than annually, so several years of market appreciation can show up all at once in a single new assessment — though the Homestead Tax Credit limits how much of that jump is actually taxable in the near term.
Sources
Related insights
Use these guides for rule explanations, planning context, and follow-up questions beyond the calculator result.